The temperature on June 28, 1943 was between 11.8 °C and 16.0 °C and averaged 13.7 °C. There was 0.6 hours of sunshine (4%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
March 4 » World War II: The Battle of the Bismarck Sea in the south-west Pacific comes to an end.
June 20 » The Detroit race riot breaks out and continues for three more days.
August 27 » World War II: Aerial bombardment by the Luftwaffe razes to the ground the village of Vorizia in Crete.
September 6 » The Monterrey Institute of Technology is founded in Monterrey, Mexico as one of the largest and most influential private universities in Latin America.
October 8 » World War II: Around 30 civilians are executed by Friedrich Schubert's paramilitary group in Kallikratis, Crete.
November 29 » World War II: The second session of the Anti-Fascist Council for the National Liberation of Yugoslavia (AVNOJ), held to determine the post-war ordering of the country, concludes in Jajce (present-day Bosnia and Herzegovina).
Day of death June 28, 1957
The temperature on June 28, 1957 was between 14.4 °C and 28.5 °C and averaged 22.2 °C. There was 15.4 hours of sunshine (92%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
June 9 » First ascent of Broad Peak by Fritz Wintersteller, Marcus Schmuck, Kurt Diemberger, and Hermann Buhl.
September 22 » In Haiti, François Duvalier is elected president.
October 3 » The California State Superior Court rules that the book Howl and Other Poems is not obscene.
November 1 » The Mackinac Bridge, the world's longest suspension bridge between anchorages at the time, opens to traffic connecting Michigan's upper and lower peninsulas.
November 3 » Sputnik program: The Soviet Union launches Sputnik 2. On board is the first animal to enter orbit, a dog named Laika.
November 8 » Pan Am Flight 7 disappears between San Francisco and Honolulu. Wreckage and bodies are discovered a week later.
When copying data from this family tree, please include a reference to the origin: J. van Broekhoven, "Database Van Broekhoven", database, Genealogy Online (https://www.genealogieonline.nl/database-van-broekhoven/I290108.php : accessed February 19, 2026), "Johannes Wilhelmus Nicolaas Josephus Opperman (1943-1957)".
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